iView

February 13, 2026 by Thor Leave a comment

It seems to be a common theme through the history of software that some titles, get bought, sold, rebranded, integrated, and discontinued by a number of companies. I find it interesting to find out a popular software title’s humble beginnings. Often when a piece of software gets bought, the file formats don’t change much, at least at first.

A little shareware program called iView started out by a company called Script Software in 1996. They later changed their name to Plum Amazing. iView then became iView Multimedia, then an iView MediaPro version before it was bought by Microsoft where they changed the name to Expression Media. After a couple years the software was bought by Phase One and then discontinued. Let’s take a look at the history.

iView, according to their website in 1997, is simply the easiest and fastest way to view and catalog pictures for the Mac. The software initially only worked on the Macintosh and the Catalog file it produced did not have an extension. But they did have a Type/Creator code. A catalog produced by version 2 of the iView software was IVWc/IVW2.

% hexdump -C iView2-s01 | head
00000000  00 00 00 05 30 32 35 69  47 4f 53 58 3a 4c 69 62  |....025iGOSX:Lib|
00000010  72 61 72 79 3a 41 70 70  6c 69 63 61 74 69 6f 6e  |rary:Application|
00000020  20 53 75 70 70 6f 72 74  3a 41 70 70 6c 65 3a 69  | Support:Apple:i|
00000030  43 68 61 74 20 49 63 6f  6e 73 3a 46 72 75 69 74  |Chat Icons:Fruit|
00000040  3a 47 72 65 65 6e 20 41  70 70 6c 65 2e 67 69 66  |:Green Apple.gif|
00000050  03 46 44 63 00 00 0f ef  03 46 44 63 08 93 65 58  |.FDc.....FDc..eX|
00000060  00 01 5c 50 00 01 5a c8  68 ff f7 40 08 93 65 4b  |..\P..Z.h..@..eK|
00000070  08 13 9a c0 ff d1 3a 80  00 a3 c8 a0 00 00 28 00  |......:.......(.|
00000080  00 05 48 64 00 00 a0 24  00 00 39 ec 00 00 00 0a  |..Hd...$..9.....|
00000090  08 93 65 64 44 00 00 24  3d 14 51 84 3d 9d 74 bc  |..edD..$=.Q.=.t.|

The iView format is a proprietary binary format used to store a catalog of multimedia formats with their metadata and thumbnail. The media viewer had support for quite a few popular formats. The file seems to have paths to each of the files it has cataloged, so some of these iView files can get pretty large.

In 2003 the iView software was ported to Windows. With that brought a formal extension to the catalog format. This was also the time the iView software made the switch from the classic MacOS to MacOSX and extensions were also encouraged at this time. iView had two different version a standard shareware version and a Media Pro version, each had their own version numbers. iView MediaPro was not compatible with Macintosh 68K machines or systems earlier than 8.6. The last Media Pro version was version 3.8.6. You can get most of the old software versions here.

% hexdump -C iViewPro302-s01.ivc | head
00000000  00 00 00 00 30 32 35 69  46 53 4d 21 00 00 00 2e  |....025iFSM!....|
00000010  66 6c 64 72 00 00 00 2e  00 00 00 00 00 00 00 06  |fldr............|
00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000030  00 00 00 00 00 00 00 00  3c 72 6f 6f 74 3e 42 4c  |........<root>BL|
00000040  44 4f 00 00 00 0c 31 00  02 00 00 00 01 01 00 00  |DO....1.........|
00000050  00 00 55 53 46 33 00 00  00 02 01 03 43 4d 52 53  |..USF3......CMRS|
00000060  00 00 01 ed 01 00 00 02  0a 01 00 00 00 00 00 00  |................|
00000070  00 02 f2 01 00 00 00 00  00 00 00 00 a2 01 00 00  |................|
00000080  00 00 02 01 03 00 00 00  a1 01 00 00 00 00 00 00  |................|
00000090  00 00 48 00 00 00 00 00  00 00 00 00 03 01 00 00  |..H.............|

This time with an extension, IVC, but with a familiar pattern at the beginning. The string 025i, hex values “30323569” at byte 4. The iView files from previous versions have the same bytes, but only version Media Pro 2 & 3 files match an existing PRONOM identification.

% sf iViewPro302-s01.ivc 
filename : 'iViewPro302-s01.ivc'
filesize : 3757
modified : 2025-09-17T17:39:27-06:00
errors   : 
matches  :
  - ns      : 'pronom'
    id      : 'fmt/647'
    format  : 'Microsoft Expression Media'
    version : '2'
    mime    : 
    class   : 'Presentation'
    basis   : 'extension match ivc; byte match at [[4 4] [3737 16]]'

These are iView Media Pro files, why are they identifying as Microsoft Expression Media files? That is because Microsoft bought iView Media Pro on June 27, 2006. Microsoft rebranded the software as Expression Media, not to be confused with Expression Studio. It was available for Windows and Macintosh, but not everyone was happy with the purchase. Version 1 of Expression Media was released the next year and was a free upgrade for iView Media Pro users. The format doesn’t appear to have changed much at all. In fact a comparison of an iView Media Pro 3 file with no content and an Expression Media 1 file are practically identical.

% hexdump -C Expression1-s01.ivc | head
00000000  00 00 00 00 30 32 35 69  46 53 4d 21 00 00 00 2e  |....025iFSM!....|
00000010  66 6c 64 72 00 00 00 2e  00 00 00 00 00 00 00 06  |fldr............|
00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000030  00 00 00 00 00 00 00 00  3c 72 6f 6f 74 3e 42 4c  |........<root>BL|
00000040  44 4f 00 00 00 0c 31 00  02 00 00 00 01 01 00 00  |DO....1.........|
00000050  00 00 55 53 46 33 00 00  00 02 01 03 43 4d 52 53  |..USF3......CMRS|
00000060  00 00 01 ed 01 00 00 02  0a 01 00 00 00 00 00 00  |................|
00000070  00 02 f2 01 00 00 00 00  00 00 00 00 a2 01 00 00  |................|
00000080  00 00 02 01 03 00 00 00  a1 01 00 00 00 00 00 00  |................|
00000090  00 00 48 00 00 00 00 00  00 00 00 00 03 01 00 00  |..H.............|

The next year brought a version 2 of Expression Media, often found bundled with a Special Edition of Office 2008 for Mac, but also a standalone product for Windows. But the catalog format remained the same.

% hexdump -C Expression2-s01.ivc | head       
00000000  00 00 00 04 30 32 35 69  3a 43 3a 5c 44 4f 43 55  |....025i:C:\DOCU|
00000010  4d 45 7e 31 5c 41 4c 4c  55 53 45 7e 31 5c 44 4f  |ME~1\ALLUSE~1\DO|
00000020  43 55 4d 45 7e 31 5c 4d  59 50 49 43 54 7e 31 5c  |CUME~1\MYPICT~1\|
00000030  53 41 4d 50 4c 45 7e 31  5c 57 69 6e 74 65 72 2e  |SAMPLE~1\Winter.|
00000040  6a 70 67 00 00 00 00 00  00 00 00 00 00 00 00 00  |jpg.............|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

Even though all of these versions have the same 4 bytes at the beginning, not all of them match the current PRONOM signature. fmt/647 is specifically for Expression Media version 2 files, but also identifies iView Media Pro 2 & 3 and Expression Media 1 files. It doesn’t identify earlier files because the signature is also looking for some bytes near the end of the file.

% hexdump -C iViewPro302-s01.ivc | tail       

00000e90  00 00 00 00 00 00 00 00  00 53 56 61 72 00 00 00  |.........SVar...|
00000ea0  04 00 00 01 f4 30 32 35  69 00 00 00 08           |.....025i....|

There is the same 4 bytes at the end of the file as well. There is also a string used in the signature at the end, “SVar”. Not sure what the string is used for but it is not in earlier versions.

% hexdump -C iView157-01 | tail 

00000420  00 00 00 00 00 00 00 00  00 00 00 00 30 32 35 69  |............025i|
00000430  00 00 00 08                                       |....|

And the even earlier versions are missing the “025i” at the end.

% hexdump -C iView2-s01 | tail

000062b0  2a ae ed d4 1a eb d4 04  c4 88 76 88 c4 d6 d4 04  |*.........v.....|
000062c0  c4 79 69 79 c4 d6 d4 04  c4 78 67 78 c4 ec d4 04  |.yiy.....xgx....|
000062d0  81 d4 f1 d4 00 ff                                 |......|

Microsoft Expression Media was short lived. Microsoft decided to sell off the software to Phase One in 2010. Phase One is the developer of Capture One, a professional photo editing program. It makes sense they would want a cataloging tool to go with their flagship product. Phase One retained the name Media Pro from the original iView Media Pro software.

Phase One took the software and did make modifications, starting with the extension used to store the catalogs. They also decided to adjust the format slightly, changing the “025i” bytes to “030i”.

% hexdump -C PhaseOneMediaProv1.mpcatalog | head 
00000000  00 00 00 05 30 33 30 69  4a 4d 61 63 31 30 37 3a  |....030iJMac107:|
00000010  4c 69 62 72 61 72 79 3a  41 70 70 6c 69 63 61 74  |Library:Applicat|
00000020  69 6f 6e 20 53 75 70 70  6f 72 74 3a 41 70 70 6c  |ion Support:Appl|
00000030  65 3a 69 43 68 61 74 20  49 63 6f 6e 73 3a 46 72  |e:iChat Icons:Fr|
00000040  75 69 74 3a 47 72 65 65  6e 20 41 70 70 6c 65 2e  |uit:Green Apple.|
00000050  67 69 66 00 00 00 00 00  00 00 00 00 00 00 00 00  |gif.............|
00000060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

The Phase One Media Pro software uses the extension MPCATALOG, but can also open the older IVC catalogs as well.

% sf PhaseOneMediaProv1.mpcatalog 

filename : 'PhaseOneMediaProv1.mpcatalog'
filesize : 21353
modified : 2025-09-16T20:37:07-06:00
errors   : 
matches  :
  - ns      : 'pronom'
    id      : 'fmt/648'
    format  : 'Media View Pro'
    version : 
    mime    : 
    class   : 'Presentation'
    basis   : 'extension match mpcatalog; byte match at [[4 4] [21329 16]]'

MPCATALOG files are identified in PRONOM using a similar signature as the one used for the IVC files. Although the name of the format isn’t quite right, MediaPro is probably a better name.

So it seems the identification is already available in PRONOM for the later MediaPro files, both iView MediaPro and Expression Media, and a second identification for the PhaseOne catalog. So we will need to either adjust the identification to include the earlier iView versions and adjust the names or we can create a new signature for the older versions. It would be good to find out what version added the change to the format, but with all the different software versions, it might be hard to nail down.

Enjoy some samples.

December 5, 2025 by Thor Leave a comment

The main subject of these posts is about Obsolete software and file formats. I prefer to focus on older software titles and collect them when I can. I have also found older Macintosh software to be particularly interesting as many of the qualities of early Macintosh use is lost today. In researching a very early Macintosh title, I came across an article from 1999 written by the Washington Post, the article, now 26 years old, was already commenting about “antique” software which was less than 20 years old at the time. Is there a term for even more antique? The title of the article? “Old Enthusiasts Are Scouring the Web to Find ‘Antique’ Software”. I feel this hasn’t changed, I still scour the web to find old software, and if the enthusiasts were “old” 26 years ago, then I am ancient.

Back in 1983, a little company called Living Videotext run by Dave Winer, who had developed a couple products for the Apple II, saw an opportunity to bring their product to the Macintosh. Their product, ThinkTank, was the fourth title to ship for the new Macintosh released in 1984.

Thinktank was an “idea processor“, not a word processor, but “a tool for organizing your thoughts on a computer screen. You could create an outline, then indent, move an item up a list, or out a level. Flesh out the details, and quickly record a top-level idea you had overlooked.” It was the beginning of outliner tools created by the company.

% hexdump -C Sample | head
00000000  2e 48 45 41 44 20 30 20  2b 20 20 4d 61 6a 6f 72  |.HEAD 0 +  Major|
00000010  20 4c 65 61 67 75 65 20  42 61 73 65 62 61 6c 6c  | League Baseball|
00000020  20 54 65 61 6d 73 0d 2e  48 45 41 44 20 31 20 2b  | Teams..HEAD 1 +|
00000030  20 20 4c 65 61 67 75 65  73 20 61 6e 64 20 44 69  |  Leagues and Di|
00000040  76 69 73 69 6f 6e 73 0d  2e 48 45 41 44 20 32 20  |visions..HEAD 2 |
00000050  2b 20 20 41 6d 65 72 69  63 61 6e 20 4c 65 61 67  |+  American Leag|
00000060  75 65 0d 2e 48 45 41 44  20 33 20 2b 20 20 57 65  |ue..HEAD 3 +  We|
00000070  73 74 65 72 6e 20 44 69  76 69 73 69 6f 6e 0d 2e  |stern Division..|
00000080  48 45 41 44 20 34 20 2d  20 20 43 61 6c 69 66 6f  |HEAD 4 -  Califo|
00000090  72 6e 69 61 20 41 6e 67  65 6c 73 0d 2e 48 45 41  |rnia Angels..HEA|

The files created by ThinkTank are plain text with the ASCII “HEAD”. There was also a DOS version of ThinkTank, but the files used were .DB and .SAV, although the templates in the .TXT format did use this same format.

% hexdump -C SAMPLE.TXT | head
00000000  2e 48 45 41 44 20 30 20  2b 20 20 50 65 72 66 6f  |.HEAD 0 +  Perfo|
00000010  72 6d 61 6e 63 65 20 52  65 76 69 65 77 0d 0a 2e  |rmance Review...|
00000020  48 45 41 44 20 31 20 2d  20 20 4e 61 6d 65 3a 20  |HEAD 1 -  Name: |
00000030  0d 0a 2e 48 45 41 44 20  31 20 2d 20 20 4a 6f 62  |...HEAD 1 -  Job|
00000040  20 54 69 74 6c 65 3a 20  0d 0a 2e 48 45 41 44 20  | Title: ...HEAD |
00000050  31 20 2d 20 20 52 65 76  69 65 77 20 44 61 74 65  |1 -  Review Date|
00000060  3a 20 0d 0a 2e 48 45 41  44 20 31 20 2d 20 20 52  |: ...HEAD 1 -  R|
00000070  65 76 69 65 77 20 70 65  72 69 6f 64 20 66 6f 72  |eview period for|
00000080  3a 20 0d 0a 2e 48 45 41  44 20 31 20 2b 20 20 4f  |: ...HEAD 1 +  O|
00000090  62 6a 65 63 74 69 76 65  73 20 4d 65 74 2f 4e 6f  |bjectives Met/No|

Turns out this was a special format they called “dot-head“, aptly named for the head of the file. It was used as an interchange format to move outlines between ThinkTank, another program called Ready!, and the later product MORE.

MORE was developed to be multiple tools in one. Meant to “Unite idea processing technology with the desktop publishing revolution“. MORE replaced ThinkTank in 1986 and promised more flexibility by creating charts and presentations quickly from your outline. MORE used the same dot-head format initially, also the ASCII could be in lowercase.

% hexdump -C MORE1 | head
00000000  2e 68 65 61 64 20 30 20  2b 20 20 48 6f 6d 65 0d  |.head 0 +  Home.|
00000010  2e 68 65 61 64 20 31 20  2d 20 20 0d 2e 68 65 61  |.head 1 -  ..hea|
00000020  64 20 31 20 2d 20 20 54  65 73 74 69 6e 67 0d 2e  |d 1 -  Testing..|
00000030  68 65 61 64 20 31 20 2d  20 20 0d                 |head 1 -  .|

In 1987 Living Videotext was purchased by Symantec. Shortly after Symantec released MORE II and a rebranded DOS application called GrandView based on ThinkTank.

Let’s take a look at GrandView, it was built from the DOS version of ThinkTank and compatible with the same formats. It had great reviews at the time and provided the first outliner for Symantec. It was written by the developer, John Friend, who created PC Outline which was often bundled with WordStar.

GrandView could import and export into any of the other products.

GrandView version 1 went with a new file format.

% hexdump -C PROJECT.GV | head
00000000  0b 00 01 00 1a 4a 4c 46  5f 49 44 06 00 02 00 01  |.....JLF_ID.....|
00000010  01 0a 00 03 00 16 00 26  00 2c 00 05 00 05 00 78  |.......&.,.....x|
00000020  06 00 07 00 ff ff 06 00  1a 00 01 00 26 00 08 00  |............&...|
00000030  26 00 ee 4d 02 00 00 00  c0 a8 00 00 00 00 00 00  |&..M............|
00000040  01 00 00 00 00 00 01 00  00 00 00 00 00 00 00 01  |................|
00000050  00 00 22 00 0a 00 20 1c  00 00 20 1c 00 00 d0 b6  |.."... ... .....|
00000060  00 00 10 ef 00 00 20 1c  00 00 20 1c 00 00 60 35  |...... ... ...`5|
00000070  01 00 01 00 05 00 10 00  62 15 00 13 00 cc 93 88  |........b.......|
00000080  10 54 54 59 2e 50 44 56  00 00 00 00 00 00 2c 00  |.TTY.PDV......,.|
00000090  1c 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

GrandView 2.0 also used the same format.

% hexdump -C TEST.GV | head
00000000  0b 00 01 00 1a 4a 4c 46  5f 49 44 06 00 02 00 01  |.....JLF_ID.....|
00000010  02 0a 00 03 00 02 00 2b  00 3a 00 05 00 05 00 78  |.......+.:.....x|
00000020  06 00 07 00 ff ff 26 00  08 00 2b 00 d5 3e 02 00  |......&...+..>..|
00000030  00 00 d0 b6 00 00 00 00  00 00 01 00 00 00 00 00  |................|
00000040  01 00 00 00 00 00 00 00  00 01 00 00 22 00 0a 00  |............"...|
00000050  20 1c 00 00 20 1c 00 00  d0 b6 00 00 10 ef 00 00  | ... ...........|
00000060  20 1c 00 00 20 1c 00 00  60 35 01 00 01 00 05 00  | ... ...`5......|
00000070  10 00 60 15 00 13 00 9b  5d 83 14 48 50 4c 33 2e  |..`.....]..HPL3.|
00000080  50 44 56 00 00 00 00 00  2c 00 1c 00 00 00 00 00  |PDV.....,.......|
00000090  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

GrandView was also compatible with the Macintosh counterpart, MORE.

Symantec then released a new version of the MORE software for the Macintosh in 1988, adding new presentation features. MORE II went away from the dot-head format and used a new proprietary format.

% hexdump -C MORE2-s01 | head
00000000  00 03 4d 52 49 49 00 80  00 00 00 80 00 00 00 78  |..MRII.........x|
00000010  00 00 00 00 00 00 00 00  00 00 00 f8 00 00 00 a8  |................|
00000020  00 00 01 a0 00 00 00 28  00 00 01 c8 00 00 00 18  |.......(........|
00000030  00 00 01 e0 00 00 00 00  00 00 01 e0 00 00 00 0c  |................|
00000040  00 00 01 ec 00 00 00 0c  00 00 01 e0 00 00 00 00  |................|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000080  00 03 00 00 00 48 00 48  00 00 00 00 02 d8 02 28  |.....H.H.......(|
00000090  ff e1 ff e2 02 f9 02 46  03 47 05 28 03 fc 00 02  |.......F.G.(....|
000000a0  00 00 00 48 00 48 00 00  00 00 02 d8 02 28 00 01  |...H.H.......(..|

Then in 1990 Symantec released MORE 3.0 with even more features and improvements to the user experience. Also adding a companion tool, MORE Graph.

% hexdump -C MORE3-s01 | head
00000000  00 06 4d 4f 52 33 00 80  00 00 00 80 00 00 00 78  |..MOR3.........x|
00000010  00 00 00 f8 00 00 01 b4  00 00 02 ac 00 00 00 a8  |................|
00000020  00 00 11 16 00 00 00 32  00 00 11 48 00 00 00 20  |.......2...H... |
00000030  00 00 11 68 00 00 00 00  00 00 11 68 00 00 00 10  |...h.......h....|
00000040  00 00 11 83 00 00 00 0c  00 00 11 68 00 00 00 00  |...........h....|
00000050  00 00 00 00 00 00 03 54  00 00 0d c2 00 00 11 78  |.......T.......x|
00000060  00 00 00 0b 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000080  00 03 00 00 00 48 00 48  00 00 00 00 02 d8 02 28  |.....H.H.......(|
00000090  ff e1 ff e2 02 f9 02 46  03 47 05 28 03 fc 00 02  |.......F.G.(....|

The MORE 3 format got a new header but appears similar in structure to the previous version. And the new companion tool MORE Graph had yet another format.

% hexdump -C MORE3-graph | head 
00000000  00 01 00 00 01 09 00 00  00 0c 00 01 09 19 80 00  |................|
00000010  01 09 54 65 73 74 00 00  00 07 00 01 00 03 00 00  |..Test..........|
00000020  00 0b 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000610  00 00 00 00 00 00 00 01  06 47 65 6e 65 76 61 00  |.........Geneva.|
00000620  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000670  01 00 00 1f ca 33 a0 00  2b 00 04 02 d8 03 d8 09  |.....3..+.......|
00000680  57 6f 72 6b 73 68 65 65  74 00 00 00 00 00 00 00  |Worksheet.......|

Luckily these early Macintosh based formats didn’t use a resource fork, making them fully compatible with their PC counterpart.

One of the coolest parts of this long list of outline software, is that years later, after Symantec discontinued the product, the original creator, Dave Winer, petitioned Symantec to allow him to release the antique software free and clear to the public. How cool is that? I would really like to see this happen more as other software titles die and get swept under the rug leaving the community to try and find copies, preserve them and make sense of the formats. Not only were the early versions made available, a tool was built to migrate the MORE format to more open XML, allowing the ideas trapped in these ancient formats to be re-imagined.

MORE 3.1 was the final version of the software to be released by Symantec. The files produced by MORE 3.1 have an identical header to the standard 3.0 version. Probably only need one signature for the two versions.

% hexdump -C MORE31-s01 | head 
00000000  00 06 4d 4f 52 33 00 80  00 00 00 80 00 00 00 78  |..MOR3.........x|
00000010  00 00 00 f8 00 00 01 b4  00 00 02 ac 00 00 00 a8  |................|
00000020  00 00 11 16 00 00 00 32  00 00 11 48 00 00 00 20  |.......2...H... |
00000030  00 00 11 68 00 00 00 00  00 00 11 68 00 00 00 10  |...h.......h....|
00000040  00 00 11 83 00 00 00 0c  00 00 11 68 00 00 00 00  |...........h....|
00000050  00 00 00 00 00 00 03 54  00 00 0d c2 00 00 11 78  |.......T.......x|
00000060  00 00 00 0b 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000080  00 03 00 00 00 48 00 48  00 00 00 00 02 d8 02 28  |.....H.H.......(|
00000090  ff e1 ff e2 02 f9 02 46  03 47 05 28 03 fc 00 02  |.......F.G.(....|

If you would like to try out the MORE software, download this disk image, and drag onto the Macintosh emulator below. The image will automatically mount and you should be able to take MORE 3.1 for a spin!

Outlining software still has a good place in idea generation and presentation. OmniOutliner can probably trace its roots to these “Antique” titles! Stay tuned for some PRONOM signatures to go along with these many format examples. For now you can gather some of the samples from my Github page.